Dynamic Routing

When Dynamic Routing is enabled, one SGM is designated as the Dynamic Routing peer. This SGM is called the Dynamic Routing Manager (DR Manager). The DR Manager communicates with DR peers and updates the SGMs' DR information. Before an SGM goes to the UP state, it updates its dynamic routing information from the DR Manager.

The SSM sends Dynamic Routing packets to an arbitrary SGM based on the SSM's distribution decision, not necessarily the DR Manager. If the SGM is not the DR Manager, the packets are forwarded to the DR Manager.

Unicast Routing

When an SGM that is not the DR Manager receives unicast IP routing packets, the SGM forwards them to the DR Manager. The DR Manager then communicates with its DR peers and updates the other SGMs' DR information.

Use asg_route to administer unicast routing.

Multicast Routing

When an SGM receives multicast IP routing packets, the SGM forwards them to all other SGMs. Each SGM handles these packets on its own.

Use asg_pim, asg_pim_neighbors, and asg_igmp to administer multicast routing.

To see which SGM is the Dynamic Routing Manager:

Run:

> asg stat -i tasks

Chassis ID: 1

-------------

Task (Task ID)          SGM ID         

SMO        (0)          1(local)         

DR Manager (4)          1(local)         

UIPC       (5)          1(local)         

General    (1)          2                

LACP       (2)          3                

CH Monitor (3)          4                

Chassis ID: 2

-------------

Task (Task ID)          SGM ID         

UIPC       (5)          1                

General    (1)          2                

LACP       (2)          3                

CH Monitor (3)          4  

Limitation:

• Only IPv4 routing protocols are supported.